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Subject:
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Persisting Simple Association
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Posted By:
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aadz5
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Post Date:
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7/25/2008 1:11:14 PM
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Hi Guys,
I have two tables stock and bar, I want to associate a bar to every stock. I have a Bar class:
public class Bar {
private int barID;
private String barName;
private Address address;
private Set stocks = new HashSet();
public Set getStocks() {
return stocks;
}
public void setStocks(Set stocks) {
this.stocks = stocks;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
public int getBarID() {
return barID;
}
public void setBarID(int barID) {
this.barID = barID;
}
public String getBarName() {
return barName;
}
public void setBarName(String barName) {
this.barName = barName;
}
public void addBar(Stock stock){
stock.setBar(this);
this.getStocks().add(stock);
}
}
and a bar descriptor:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping>
<class name="com.venture.hibernate.Bar" table="bar" >
<id name="barID" type="java.lang.Integer" column="barID" >
<generator class="increment" />
</id>
<property name="barName" type="string">
<column name="bar_name" length="20"/>
</property>
<set name="stocks" inverse="true">
<key column="barID"></key>
<one-to-many class="com.venture.hibernate.Stock"/>
</set>
</class>
</hibernate-mapping>
and a stock class:
public class Stock {
private int stockID;
private int productID;
private int quantity;
private Set stock = new HashSet();
private Bar bar = new Bar();
private Product product = new Product();
private Date date;
private String userName;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public int getProductID() {
return productID;
}
public void setProductID(int productID) {
this.productID = productID;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
public int getStockID() {
return stockID;
}
public void setStockID(int stockID) {
this.stockID = stockID;
}
public int getQuantity() {
return quantity;
}
public Bar getBar() {
return bar;
}
public void setBar(Bar bar) {
this.bar = bar;
}
public Product getProduct() {
return product;
}
public void setProduct(Product product) {
this.product = product;
}
public Set getStock() {
return stock;
}
public void setStock(Set stock) {
this.stock = stock;
}
}
and a stock descriptor:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping>
<class name="com.venture.hibernate.Stock" table="inventory" >
<id name="stockID" type="java.lang.Integer" column="inventoryID" >
<generator class="increment" />
</id>
<property name="product" type="string" length="20">
<column name="productid"></column>
</property>
<property name="quantity" type="integer">
<column name="quantity"></column>
</property>
<many-to-one name="bar"
column="barID"
class="com.venture.hibernate.Bar"
/>
</class>
</hibernate-mapping>
I try to persist a stock item adding the folowing:
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("Started");
SQLImpl sqlImpl = new SQLImpl();
Bar bar = new Bar();
bar.setBarName("Hello");
Stock stock = new Stock();
bar.addBar(stock);
stock.setQuantity(10);
stock.setBar(bar);
stock.setUserName("Adnan");
sqlImpl.insertStockDetails(stock);
System.out.println("Finished");
}
but I get the following error:
Exception in thread "main" org.hibernate.TransientObjectException: com.venture.hibernate.Bar
I have no idea why, could someone please point me in the right direction?
Regards
Ads
Adz - Learning The J2EE Ways.
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Reply By:
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rakesh_mscit
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Reply Date:
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8/13/2008 3:49:16 AM
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I think you can solve it by following the info. given in the bellow link
http://parasjain01.wordpress.com/2008/01/28/orghibernatetransientobjectexception-revisited/
- Rakesh
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